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Under "Turbulence", change the "Specification Method" to "Intensity and Length Scale". Set the "Turbulence Intensity (%)" to 5 and the "Turbulent Length Scale (m)" to 1.
Note: it's very important to change the Specification Method for the Turbulence to "Intensity and Length Scale", otherwise your model won't converge.
Pressure at the outlet
Locate and highlight "farfield2". Change its Type to "pressure-outlet".
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